RFID based Ticketing System DEMO

8051 code of RFID Based Ticketing System

/* Author:-
                  MUFADDAL KAGDA
                  THOMSON AJ
                  TERESA ANTONY

MicroController (keil) code 8051
*/
#include <reg51.h>
#include <string.h>
#define dataport P1 //Port for LCD display
#define keyp P3  // Port for keypad
#define port P2 //control signlas for LCD and Buzzer
#define port0 P0

sbit rs = port^1;//register select
sbit rw = port^0;//read/write
sbit en = port^2;//enable
sbit buzzer = port0^0; //buzzer port
sbit red = port0^2;  //port for Red LED
sbit green=port0^1;  //port for Green LED
unsigned char card[15];
unsigned char c[15];
char READ_SWITCHES(void);
char get_key(void);

sbit mtrop=P0^4;  //port for opening gate (moves motor anticlockwise)
sbit mtrcl=P0^3;   //port for closing gate(moves motor clockwise)
sbit ir=P0^6;         //port connected to IR circuit
sbit RowA = keyp^0;     //RowA
sbit RowB = keyp^1;     //RowB
sbit RowC = keyp^2;     //RowC
sbit RowD = keyp^3;     //RowD

sbit C1   = keyp^4;     //Column1
sbit C2   = keyp^5;     //Column2
sbit C3   = keyp^6;     //Column3
sbit C4   = keyp^7;     //Column 4


void delay(unsigned int time){
   unsigned int i;
   for(i=0;i<time;i++);
 }
void send(unsigned char d)
{
while(!TI);
TI=0;
SBUF=d;
}
unsigned char read()
{
while(!RI);
RI=0;
return SBUF;
}
void lcd_cmd(unsigned char item) //Function to send command to LCD
{
dataport = item;
rs= 0;
rw=0;
en=1;
delay(1);
en=0;
return;
}
void lcd_data(unsigned char item) //Funtion to send data on LCD
{
//send(item);
dataport = item;
rs= 1;
rw=0;
en=1;
delay(1);
en=0;
return;
}
void lcd_data_string(unsigned char *str) // Function to send string on LCD
{
int i=0;
while(str[i]!='\0')
{
 lcd_data(str[i]);
 i++;
 delay(20000);
}
return;
}

void lcd(unsigned char str[15],int r,int p,int c)  // Funtion to Initialize,write,clear LCD
{
  //row1 0x80
  //row2 0xc0
lcd_cmd(0x38);//8bit data bus
lcd_cmd(0x0f);//turn display on,display cursor, blink cursor
//delay(sec);

//---lcd_cmd(0x01);//clear
if(c==1)
lcd_cmd(0x01);
//delay(sec);
if(r==1)
lcd_cmd(0x80+p); //row1 pos
else if(r==2)
lcd_cmd(0xc0+p); //row2 pos

//delay(sec);
lcd_data_string(str);
}
char get_key(void)           //get key from user
{
char key = 'n';              //assume no key pressed

while(key=='n')              //wait untill a key is pressed
key = READ_SWITCHES();   //scan the keys again and again
/* buzzer=1;
delay(20);
buzzer=0;  */
return key;                  //when key pressed then return its value
}

void serial_init()
{
// P0=0x00;                      // P0 and P2 as output ports
    P2=0x00;
TMOD = 0x20;
SCON = 0x50;
    TH1  = 0xFD;
    TL1  = 0xFD;
    TR1  = 1;
}
char READ_SWITCHES(void)
{
RowA = 0; RowB = 1; RowC = 1; RowD = 1; //Test Row A

if (C1 == 0) { delay(10000); while (C1==0); return '*'; }
if (C2 == 0) { delay(10000); while (C2==0); return '*'; }
if (C3 == 0) { delay(10000); while (C3==0); return '*'; }
if (C4 == 0) { delay(10000); while (C4==0); return '*'; }

RowA = 1; RowB = 0; RowC = 1; RowD = 1; //Test Row B

if (C1 == 0) { delay(10000); while (C1==0); return '*'; }
if (C2 == 0) { delay(10000); while (C2==0); return '*'; }
if (C3 == 0) { delay(10000); while (C3==0); return '*'; }
if (C4 == 0) { delay(10000); while (C4==0); return '*'; }

RowA = 1; RowB = 1; RowC = 0; RowD = 1; //Test Row C

if (C1 == 0) { delay(10000); while (C1==0); return '*'; }
if (C2 == 0) { delay(10000); while (C2==0); return '6'; }
if (C3 == 0) { delay(10000); while (C3==0); return '5'; }
if (C4 == 0) { delay(10000); while (C4==0); return '4'; }

RowA = 1; RowB = 1; RowC = 1; RowD = 0; //Test Row D

if (C1 == 0) { delay(10000); while (C1==0); return '*'; }
if (C2 == 0) { delay(10000); while (C2==0); return '3'; }
if (C3 == 0) { delay(10000); while (C3==0); return '2'; }
if (C4 == 0) { delay(10000); while (C4==0); return '1'; }

return 'n';           // Means no key has been pressed
}
void display(char a,int r,int p) //Display functon for LCD
{
switch(a)
{
 case '1':lcd("1",r,p,0);
   break;
 case '2':lcd("2",r,p,0);
   break;
 case '3':lcd("3",r,p,0);
   break;
 case '4':lcd("4",r,p,0);
   break;
 case '5':lcd("5",r,p,0);
   break;
 case '6':lcd("6",r,p,0);
   break;
 case '7':lcd("7",r,p,0);
   break;
 case '8':lcd("8",r,p,0);
   break;
 case '9':lcd("9",r,p,0);
   break;
 case '0':lcd("0",r,p,0);
   break;

}
}
main()
{
char key;
unsigned char i;
ir=0; // Initialize IR circuit to 0

  serial_init();
  TI=1;
RI=1;
while(1)
{
lcd(" Welcome to",1,0,1);
lcd("Ticketing System",2,0,0);

  lcd(" Name:",1,0,1);
for(i=0;i<12;i++) //reading name
  {
    while(RI==0);
    card[i]=SBUF;
    RI=0;
  }

if(card[1]=='#')  //if invalid user
{
red=0;  //redLED ON
   buzzer=0;  //Buzzer ON
   delay(40000);
   red=1;  //redLED OFF
   buzzer=1;  //Buzzer OFF
lcd(" Invalid User",1,0,1);
continue;
}
lcd(card,1,6,0); //if valid user
lcd("Dest:",2,0,0);
   key = get_key();
   display(key,2,7);
buzzer=0;
delay(2000);
buzzer=1;
       send(key);



for(i=0;i<4;i++)  //response to enough or low balance
  {
    while(RI==0);
    c[i]=SBUF;
    RI=0;
  }

if(c[1]=='@')  //if low balance
{

  red=0;   //glow red LED
  buzzer=0;  //start buzzer
  delay(4000);
  red=1;   //stopGlowing
  buzzer=1;  //stop buzzer
  lcd("Low Balance",2,0,0);
}
else   //enough balance then display balance
{
 green=0;  //GreenLED ON
  delay(4000);
  delay(4000);
  delay(4000);
 green=1;  //Green LED OFF
 mtrop = 0; //open gate by moving motor anticlockwise
delay(4000);
delay(3200);
   mtrop = 1; //stop moving
lcd("Bal: ",2,0,0);
  lcd(c,2,5,0);
 while(ir==0); //Wait till IR Circuit Sends 1
 mtrcl=0; //close gate by moving motor clockwise
delay(4000);
 mtrcl=1; //stop moving
 ir=0; //Initialize IR back to 0

}

         }  

}

Vb.net code to read from ComPort and display!!

Public Class Form1
Dim c1 As Char
 

Private Sub SerialPort1_DataReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived

        Dim str As String
        str = ""
        c1 = Convert.ToChar(SerialPort1.ReadByte())
        If (c1 <> "") Then
            MsgBox(c1)
        End If

    End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        With SerialPort1

            .BaudRate = 9600
            .Parity = System.IO.Ports.Parity.None
            .DataBits = 8
            .StopBits = System.IO.Ports.StopBits.One
            .Handshake = System.IO.Ports.Handshake.None
            If .IsOpen = False Then
                .Open()
            End If
        End With

    End Sub
End Class

Keil Code for Reading 4x4 Matrix Keypad and sending to System buffer

#include <reg51.h>
#include <string.h>

char READ_SWITCHES(void);
char get_key(void);
unsigned char i;
sbit RowA = P3^0;     //RowA
sbit RowB = P3^1;     //RowB
sbit RowC = P3^2;     //RowC
sbit RowD = P3^3;     //RowD

sbit C1   = P3^4;     //Column1
sbit C2   = P3^5;     //Column2
sbit C3   = P3^6;     //Column3
sbit C4   = P3^7;
void delay(unsigned int time){
   unsigned int i;
   for(i=0;i<time;i++);
 }
void send(unsigned char d)
{
while(!TI);
TI=0;
SBUF=d;
}
char get_key(void)           //get key from user
{
char key = 'n';              //assume no key pressed

while(key=='n')              //wait untill a key is pressed
key = READ_SWITCHES();   //scan the keys again and again

return key;                  //when key pressed then return its value
}
char READ_SWITCHES(void)
{
RowA = 0; RowB = 1; RowC = 1; RowD = 1; //Test Row A

if (C1 == 0) { delay(10000); while (C1==0); return '7'; }
if (C2 == 0) { delay(10000); while (C2==0); return '8'; }
if (C3 == 0) { delay(10000); while (C3==0); return '9'; }
if (C4 == 0) { delay(10000); while (C4==0); return '/'; }

RowA = 1; RowB = 0; RowC = 1; RowD = 1; //Test Row B

if (C1 == 0) { delay(10000); while (C1==0); return '4'; }
if (C2 == 0) { delay(10000); while (C2==0); return '5'; }
if (C3 == 0) { delay(10000); while (C3==0); return '6'; }
if (C4 == 0) { delay(10000); while (C4==0); return 'x'; }

RowA = 1; RowB = 1; RowC = 0; RowD = 1; //Test Row C

if (C1 == 0) { delay(10000); while (C1==0); return '1'; }
if (C2 == 0) { delay(10000); while (C2==0); return '2'; }
if (C3 == 0) { delay(10000); while (C3==0); return '3'; }
if (C4 == 0) { delay(10000); while (C4==0); return '-'; }

RowA = 1; RowB = 1; RowC = 1; RowD = 0; //Test Row D

if (C1 == 0) { delay(10000); while (C1==0); return 'C'; }
if (C2 == 0) { delay(10000); while (C2==0); return '0'; }
if (C3 == 0) { delay(10000); while (C3==0); return '='; }
if (C4 == 0) { delay(10000); while (C4==0); return '+'; }

return 'n';           // Means no key has been pressed
}
main()
{
    char key;
    P0=0x00;                      // P0 and P2 as output ports
    P2=0x00;
    TMOD=0x20;            //Enable Timer 1
    TH1=0XFD;
    SCON=0x50;
    TR1=1;
    TI=1;
    while(1)
    {
    key = get_key();
   send(key);
    }       // clear memory and home cursor

}